Tire mounting machine



y 7, 1935. o. H. RENFRQ 2,000,036

v TIRE MOUNTING MACHINE 2 Shets-Sheet 1 Filed May 31, 1933 JVVENTUA May7, 1935. o. H. RENFRO TIRE MOUNTING MACHINE 2 Sheets-Sheet 2 Filed May31, 1953 j /v VENIDAL i Q HEENFE D lTIUENE'YEL the conventional balloontiretire causes the wheel onwhich the tire is to be Patented May 7, 1935ears-NT FFIE 'rrma: MomvTnvG. MACHINE H. Rena, South Gate,'Calif. IApplica tion May 31, 1933, semi Nohcvasvc 5, Claims. (01. 14.45288)mounting machines.

An'object of the invention is to provide a 0011-:- struction on which avehicle wheel, such as an automobile wheel, canbe easily mounted tofacile itate removal and replacement of'tires thereon. Recently a newtype of tire has been placed on the market generally known as an airwheel. This type of tire'is extremely large, as compared with itscircumference and-is much larger than This'inventionrelates to'improvements in tire mounted to be made very smallwith the result thatwhen it is necessary-to remove or replace tires on these extremely.small wheels difliculty is encountered inso doing. It is'extremelydiffi- 'cult to remove andreplace the tire on the wheel while the wheelremains on the car and the cus tomary practice is to'remove thewheelfrom the car before attempting to remove the tire from the wheel.Inasmuch the wheels' are' very small, diflicultyis' encountered ingrasping the wheel in' such a manner as to enable aneasy re:

movalof the tire therefrom, The improved construction has been primarilydesigned toenable the wheel to be clamped in a stationaryposition insuch a manner as to enable the"tire--to be easily removed and easilyreplaced. r

Another object of the invention is to so design a constructionof thischaracter that it'may receivewheels of the-variousshap-es and designswhich are now conventionally used'on automobiles; In other words it isthe intention that the improved construction be of universal applica-'tion to the various types oiwheelsnow used and which carry theseunusually large size tires:

w With the foregoing and other objects in view,

which will be made manifest in the following de tailed description, andspecifically pointed out in the appended claims, reference is had'to theaccompanying drawings for an illustrative embodiment of the invention,wherein: 7 Fig. 1 is a view in sideelevation, parts being broken awayand shown insection, illustrating the improved tire mounting machine fFig. 2 is a top plan view of the machine','the

. wheel and tire being shown ashaving been removedtherefrom. c I Fig. 3is a sectional view taken substantially upon the line 33 upon Figure 1in the direction indicated. f I

' Fig, 4 is a view illustrating a-modified type of clamping head; whichmay be used to bear a clamp-upon forms of wheels that require this typeof construction. r

The size of ;the j the clamping construction shown on Figure 2 as havingbeen removed therefrom and parts of the construction renderingitadaptable-.to' thetype of wheel shown on'Figure 6.

.Fig. 5 is a'view similar to Figure 2', illustrating 'Fig. 6 illustratesthe manner in'which the con:

struction shown in detail in Figure 5 is ,usedon a wheel which does nothave a'removable jhub I cap. v 'Referring to the accompanying drawings,

wherein similar reference characters designate similar parts throughout,the improved tire mounting machine comprises a circular table 1 l0having a rectangular or square projection H' on the under side thereofat' about its center. Legs l2, which may be formed of angle irons, aresecured to this projectionand serve to support the table. These legspreferably are secured-to the corners of the projection as by bolts I3and may be bolted to the floor, as indicated, by bolts 14. On the top ofthe table there is preferably a central cylindrical upstandingprojection 55; "A central bore It extends through the table andaclamping rod I! is slidable therein. Thisclamp ing rod has a link I8pivotally secured asat M to itslower end and this link in turn connectedas at toa yieldable or bendable lever 2|. This lever is'fulcrumed as at22 on. one of the legs [2 and has its swinging ends twisted as at 23 topresent an upstanding edge'24, see Figure 3, which'is receivable in anyone ofthe-teeth of-ara'tchet bar 25. Ratchet bar 25 isfas'te'ned to oneof thelegs l2 and lever 2! is kept adjacent it by meansaof a guard 26.At the upper end i of clamping rod I! there is apivoted head 21 andbeneath this there is provided a hubspanning member 28. This hubspanning member "is of concave-convex shape, as clearly shown on Figure1, and has the'outline shown on Figure 2'. It" has an elongated slot '29formed centrally thereof through which-head 2! can be passed; As ameansfor lifting-lever 2 I link I 8 a'nd'clamping rod l1, when lever. 2!is disengagedfrom the ratchet, a suitable spring 30 may be used toconshown on Figure 2. The operator then steps on 2| is swung intoengagement with one of theratchet teeth on the ratchet bar 25. 'In thisway conventional manner. disengagement of the lever from the ratchet releases nmd enables spanning member over head 21, "ilhe wheel canthen beremoved the flexing of the lever 2| maintains atension on clamping rodl|, holding the wheelW tightly against the table as longas the ratchetis en gaged. .When the wheel is thus clampedfit is possible to removethe tire T quite easily. in? the Upon replacing the. tire,

28 to he reverselyturned so thatit may be slipped fromthe table.

It will be noted the-construction-is such that imelampingtheiwheelagainst the table, the hub is'so rmga'gdgthatthe finish thereonwill. not be marred' in-a-ny. way. 7 V With some types of wheels becauseof the natmie of hubconstructions it is desirable toahave a difierentstyle *ofspamiing member.

the construction isiequipped with Ia separate spanning member as shownonFigur'e 4.

. This meneiy-consistsof a transverse bar SL-Which may bemused toxslide:through slot 32 in the top of clamping' rod ll. fastened to one end ofthis barisa transverse bar sswhioh rests'onthe' hub.

' Asieparate bar 34.; which is :a'co unterpart'of bar ilis-merelyPositioned beneath-theopposite end of-bar ii lanrlf is held downagain'stthe hub by bar il being damped thereagainst. This form of warming meansis more advantageously em:- ploy-ed on certain styles of; wheelconstruction thanithe'spanningmeans disclosed at28.

Some styles ofwheel construction; now being employedare similar to thatsliown'on-Figure 6 whereinthe tire T is'mounted-on'wheel W having-a-hubH with ai'permanently -attached hub mp; "It is desirable to be'able'touse the same construction-for fastening 'a wheel of this charaeter inplacerwhile the tire is being removed. In-this-style of wheel-, thehubis usually provided with a plurality of apertures therethrough 'forthe receptionof lug bolts foriast'ening the wheel iii-place on:the-vehicle; I take advantage of this construction and 'formtwo-apertures 35 and 36 whioh-extend through the'table. These apertures"are located at different radial distances irom-the centerof thetable.-"On the-opposite side of'the -table there is-formed a' diagonal slotaboutaperture 35 as a center,bolt"39 can be prdperly'liropped'intheslot. The two bolts '38 and}! have shoulders 40 formed thereon which feng'age the top or outer side of the hub. Their lowerendsfare-longitudinally slotted as at 4| to receive tapered Wedges 42which are driven thereo,ose

through. When the wedges are driven, they clamp the wheel in position onthe table, in which position the tire can be removed and replaced. Inthe event that a wheel having a larger sized hub is to have its tireremoved and replaced, bolt 38 instead of being dropped through aperture35 is dropped through aperture 36, which is a greater distance from thecenter of the table. Bolt 39 is dropped through an aperture in the huband through slot 3?. The slot-enables adjustments of the various partsto accommodate the wheels of various sizes. V From the abovedescribedconstruction it will be appreciated that a novel andadvantageous :tire mounting machine is provided, which enables l theclampingiof a wheel in place against the table or face plate I 0. Thewheel is clamped by meansof thehub such a manner as not to mar .thepaint or finish and a tension is continually maintained to hold thewheel in place. With the wheelrttms; stationarily mounted, there is freeaccess to the tire, enabling it to be easily removedifrom thexwheel andtube replaced;

Narious'bhanges be made in the details of constructionwithout departingfrom the spirit on-scope of the invention as defined by the. appendedclalms. a T I claim: g 1. A tire mounting maoine comprising meansproviding surfaceagainst which a wheel may 7 be positioned, meansmovable through the surface adapted to be -extended through the hub ofthe wheel, aspanning means adapted to be connected 'to saidmova'blemeans and caused thereby to press thewheel against the surface, meansfor imposing a tension upon themovable" means including a'bendablelever. and means 'for releasably holding the lever depressed.

' 2. A tire mounting machine comprising means providing a table againstwhich a wheel may'be positioned,a clamping rod slidable through thetable having a; head, a spanning means adapted to be connected tothe-head and caused thereby topress the wheel against the tabl'e, abendable lever, 'means connecting the clamping rod and bendable lever,and ratchet'means forl holding the lever depressed."

3. A tire mounting machine comprising'mans providing a table upon whicha wheel maybe positioned with"its tire 'disposedbutwardly of and beyondthe edge of the table, a clamping 7 rod slidably extending through the"table andnormally extending ther'eaboveiso as to be extended throughthe hub of the wheel, spanning means associated with the upper end ofthe clamping rod by which the'wheel may be clamped. solidlyagainst thetable, and means for imposing a downward tension onthe clamping rod tocause it to clamp the wheel solidly against the table.

4. A tire mounting machine comprising means providing table upon which awheel may be positioned with its tire disposed outwardly of and beyondthe edge of the'table, a clamping rod slidably extending through thetable and normally. extending thereabove'so as to be extended throughthe hub of the, wheel, spanning means associated, with the upper. end ofthe'j'clampin'g rod, by whichthe wheel may, be clamped solidly againstthe table, means for imposing -a downward tension on the clamping rod tocause it to clamp the wheel solidly against the table,-a bendable leverfulcruined adjacent one end and having ratchet means releasably holdingthe other end in position, and a link pivotally connected to theclamping rod and lever whereby the clamping rod may be pulled downwardlyto clamp the wheel solidly against the table.

5. A tire mounting machine comprising means providing a table upon whicha wheel may be positioned with its tire disposed outwardly of and beyondthe edge of the table, a clamping rod slidably extending through thetable and normally extending thereabove so as to be extended through thehub of the wheel, spanning means associated with the upper end of theclamping rod by which the wheel may be clamped solidly against thetable, means for imposing a downward tension on the clamping rod tocause it to clamp the wheel solidly against'the table, a bendable leverfulcrumed adjacent one end and having ratchet means releasably holdingthe other end in position, a' link piyotally connected to the clampingrod and lever whereby the clamping rod' maybe pulled downwardly to clampthe wheel solidly against the table; and

springmeans urging the clamping rod, link, and 10 I leverintouppermostpositions, V

o. H, ammo.

